کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661462 1458125 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simulation of transient Rayleigh-Bénard-Marangoni convection induced by evaporation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Simulation of transient Rayleigh-Bénard-Marangoni convection induced by evaporation
چکیده انگلیسی
Numerical simulation of thermal convection induced by solvent evaporation in an initially isothermal fluid is considered. Both thermocapillarity and buoyancy driving forces are taken into account, and a criterium based on the Peclet number is used to analyze the stability of this transient problem. Critical Marangoni and Rayleigh numbers are obtained for a large range of Biot and Prandtl numbers. Results of the non-linear simulations are compared with a previous linear transient stability analysis based on a non-normal approach and with visualizations performed during polyisobutylene (PIB)/toluene solutions drying experiments. A scaling analysis is developed for the Marangoni problem and correlations are derived to predict the order of magnitude of temperature and velocity as a function of Bi, Ma and Pr numbers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issue 4, 31 January 2010, Pages 656-664
نویسندگان
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